EP4283376A1

EP4283376A1 - Electronic device

Info

Publication number: EP4283376A1
Application number: EP23174030.9A
Authority: EP
Inventors: Chen-wei FAN; Chi-Wei Chi; Wei-Fong Hong; Ssu-Hsin Liu
Original assignee: Largan Precision Co Ltd
Current assignee: Largan Precision Co Ltd
Priority date: 2022-05-26
Filing date: 2023-05-17
Publication date: 2023-11-29
Also published as: TW202347003A; US20230384486A1; BR102023009908A2; CN220121016U; CN117130073A

Abstract

An electronic device includes a transparent element, an optical component and an anti-reflecting layer. The transparent element is configured to separate an inner side and an outer side of the electronic device, so that a light passes through the transparent element to enter or leave the electronic device, and the transparent element includes an inner side surface and an outer side surface. The inner side surface faces towards the inner side, and the outer side surface faces towards the outer side. The optical component is corresponding to the inner side surface of the transparent element. The anti-reflecting layer is disposed on at least one portion of the inner side surface of the transparent element.

Description

BACKGROUND

Technical Field

The present disclosure relates to an electronic device. More particularly, the present disclosure relates to a portable electronic device.

Description of Related Art

In recent years, portable electronic devices have developed rapidly. For example, intelligent electronic devices, head-mounted devices and video capturing devices have been filled in the lives of modern people. However, as technology advances, the quality requirements of the electronic device are becoming higher and higher.
Fig. 7 is a schematic view of a light L traveling through the optical component 720 according to the prior art. In Fig. 7, the light L easily reflects between a transparent element 710 and the optical component 720, and hence the stray light is easily formed on the imaging surface of the electronic device according to the prior art so as to influence the functional performance of the optical component. Therefore, an electronic device, which can reduce the reflection of the light between transparent element and the optical component, needs to be developed.

SUMMARY

According to one aspect of the present disclosure, an electronic device includes a transparent element, an optical component and an anti-reflecting layer. The transparent element is configured to separate an inner side and an outer side of the electronic device, so that a light passes through the transparent element to enter or leave the electronic device, and the transparent element includes an inner side surface and an outer side surface. The inner side surface faces towards the inner side, and the outer side surface faces towards the outer side. The optical component is corresponding to the inner side surface of the transparent element. The anti-reflecting layer is disposed on at least one portion of the inner side surface of the transparent element.
According to the electronic device of the aforementioned aspect, wherein the anti-reflecting layer includes a nanostructure layer, the nanostructure layer includes a plurality of ridge-like protrusions, the ridge-like protrusions extend non-directionally from a disposing surface, a bottom of each of the ridge-like protrusions is closer to the disposing surface than a top of each of the ridge-like protrusions to the disposing surface, and each of the ridge-like protrusions is tapered from the bottom towards the top.
According to the electronic device of the aforementioned aspect, wherein the anti-reflecting layer further includes a structure connection film, the structure connection film includes at least one silicon dioxide layer, and a top of the silicon dioxide layer is directly contacted with a bottom of the nanostructure layer.
According to the electronic device of the aforementioned aspect, wherein a partial area of the top of the silicon dioxide layer is contacted with an air.
According to the electronic device of the aforementioned aspect, wherein an average reflectivity of the at least one portion of the inner side surface of the transparent element corresponding to a light with a wavelength range between 400 nm and 700 nm is R₄₀₇₀, and the following condition is satisfied: R₄₀₇₀ ≤ 0.5%.
According to the electronic device of the aforementioned aspect, wherein an average reflectivity of the at least one portion of the inner side surface of the transparent element corresponding to a light with a wavelength range between 750 nm and 900 nm is R₇₅₉₀, and the following condition is satisfied: R₇₅₉₀ ≤ 0.65%.
According to the electronic device of the aforementioned aspect, wherein an average structural height of the nanostructure layer is larger than or equal to 70 nm and less than or equal to 350 nm.
According to the electronic device of the aforementioned aspect, wherein the outer side surface includes an anti-scratch layer.
According to the electronic device of the aforementioned aspect, wherein the optical component is an imaging camera.
According to the electronic device of the aforementioned aspect, wherein a spacing distance between the inner side surface and the optical component is D, and the following condition is satisfied: D ≤ 5 mm.
According to the electronic device of the aforementioned aspect, wherein the anti-reflecting layer is further disposed on the optical component.
According to the electronic device of the aforementioned aspect, wherein the transparent element further includes a light blocking structure.
According to the electronic device of the aforementioned aspect, wherein a light-transmitting area is remained on the transparent element via the light blocking structure, and the light-transmitting area is corresponding to the optical component.
According to the electronic device of the aforementioned aspect, wherein a number of the transparent element is at least two, a number of the optical component is at least two, and each of the transparent elements is corresponding to each of the optical components.
According to the electronic device of the aforementioned aspect, wherein the inner side surface of one of the transparent elements is non-planar.
According to the electronic device of the aforementioned aspect, wherein a number of the optical component is at least two, and the optical components are corresponding to the inner side surface of the transparent element.
According to the electronic device of the aforementioned aspect, wherein one of the optical components is an imaging camera, and the other one of the optical components is a light-emitting element.
According to the electronic device of the aforementioned aspect, wherein the optical components are at least two imaging cameras, and a field of view of one of the imaging cameras is different from a field of view of the other one of the imaging cameras.
According to the electronic device of the aforementioned aspect, wherein a corresponding working wavelength of one of the optical components is different from a corresponding working wavelength of the other one of the optical components.
According to the electronic device of the aforementioned aspect, wherein the electronic device is a portable electronic device.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1A is a three dimensional view of an electronic device according to the 1st example of the present disclosure.
Fig. 1B is a partial exploded view of the electronic device according to the 1st example in Fig. 1A.
Fig. 1C is a partial perspective view of the electronic device according to the 1st example in Fig. 1A.
Fig. 1D is a schematic view of a light traveling through the optical component according to the 1st example in Fig. 1A.
Fig. 1E is a schematic view of the transparent element and the optical component according to the 1st example in Fig. 1A.
Fig. 1F is a partial enlarged view of the transparent element according to the 1st example in Fig. 1E.
Fig. 1G is a partial enlarged view of the inner side surface of the transparent element according to the 1st example in Fig. 1F.
Fig. 1H is an enlarged view of the light blocking structure and the anti-reflecting layer according to the 1st example in Fig. 1G.
Fig. 1I is an enlarged view of the transparent element and the anti-reflecting layer according to the 1st example in Fig. 1G.
Fig. 1J is a scanning electron microscope image of the transparent element and the anti-reflecting layer according to the 1st example in Fig. 1I.
Fig. 1K is a scanning electron microscope image of the nanostructure layer according to the 1st example in Fig. 1I.
Fig. 1L is a partial enlarged view of the outer side surface of the transparent element according to the 1st example in Fig. 1F.
Fig. 1M is a schematic view of the transparent element according to the 1st example in Fig. 1A.
Fig. 1N is a partial scanning electron microscope image of the transparent element according to the 1st example in Fig. 1M.
Fig. 1O is a measurement result of the reflectivity according to the 1st example in Fig. 1A.
Fig. 2A is a partial exploded view of an electronic device according to the 2nd example of the present disclosure.
Fig. 2B is a schematic view of the transparent element and the optical component according to the 2nd example in Fig. 2A.
Fig. 3A is a three dimensional view of an electronic device according to the 3rd example of the present disclosure.
Fig. 3B is a partial exploded view of the electronic device according to the 3rd example in Fig. 3A.
Fig. 3C is a schematic view of the transparent element according to the 3rd example in Fig. 3A.
Fig. 3D is a cross-sectional view of the transparent element along a 3D-3D line in Fig. 3C.
Fig. 3E is a partial enlarged view of the transparent element according to the 3rd example in Fig. 3D.
Fig. 4 is a three dimensional view of an electronic device according to the 4th example of the present disclosure.
Fig. 5 is a three dimensional view of an electronic device according to the 5th example of the present disclosure.
Fig. 6 is a three dimensional view of an electronic device according to the 6th example of the present disclosure.
Fig. 7 is a schematic view of a light traveling through the optical component according to the prior art.

DETAILED DESCRIPTION

The present disclosure provides an electronic device, which includes a transparent element, an optical component and an anti-reflecting layer. The transparent element is configured to separate an inner side and an outer side of the electronic device, so that a light passes through the transparent element to enter or leave the electronic device, and the transparent element includes an inner side surface and an outer side surface, wherein the inner side surface faces towards the inner side, and the outer side surface faces towards the outer side. The optical component is corresponding to the inner side surface of the transparent element. The anti-reflecting layer is disposed on at least one portion of the inner side surface of the transparent element. Hence, the reflection of the stray light between the transparent element and the optical component can be avoided by disposing the anti-reflecting layer on the inner side surface of the transparent element so as to enhance the image quality.
The anti-reflecting layer can include a nanostructure layer, wherein the nanostructure layer includes a plurality of ridge-like protrusions, the ridge-like protrusions extend non-directionally from a disposing surface, a bottom of each of the ridge-like protrusions is closer to the disposing surface than a top of each of the ridge-like protrusions to the disposing surface, and each of the ridge-like protrusions is tapered from the bottom towards the top. Moreover, the nanostructure layer can include an aluminum oxide. Further, when the cross section of the light blocking element is observed, the nano-ridged protrusions have the shape of wide bottom and narrow top like a mountain ridge so as to gradually decrease the equivalent refractive index of the nanostructure layer from the bottom (that is, the foot of the mountain) to the top (that is, the top of the mountain) for avoiding the light reflecting totally on the interface, and the rough surface can be formed so as to reduce the reflection of the light.
The anti-reflecting layer can further include a structure connection film, wherein the structure connection film includes at least one silicon dioxide layer, and a top of the silicon dioxide layer is directly contacted with a bottom of the nanostructure layer. Therefore, the connecting stability of the nanostructure layer can be enhanced, so that the nanostructure layer can be stably attached on different materials.
A partial area of the top of the silicon dioxide layer can be contacted with an air. In particular, the nanostructure layer has a plurality of tiny pores so as to modulate the equivalent refractive index of the nanostructure layer.
The outer side surface can include an anti-scratch layer. Therefore, the scratch can be avoided forming on the outer side surface of the transparent element so as to avoid influencing the operation of the optical component.
The optical component can be an imaging camera, and the anti-reflecting layer can be further disposed on the optical component, so that the reflection of the light between the elements on the inner side of the electronic device can be further reduced to enhance the image quality. Moreover, the elements disposed on the imaging camera can be a lens barrel or a lens element, but the present disclosure is not limited thereto.
The transparent element can further include a light blocking structure, wherein a light-transmitting area is remained on the transparent element via the light blocking structure, and the light-transmitting area is corresponding to the optical component. In particular, the light blocking structure is configured to avoid the light passing through, and the light blocking structure can be the black ink spraying layer formed via the quick drying ink based on the epoxy resin, the blackened coating layer via the chemical vaper deposition, the photoresistive coating layer or the light blocking sheet composed of the black polyethylene terephthalate (PET) material, but the present disclosure is not limited thereto.
A number of the transparent element can be at least two, a number of the optical component can be at least two, and each of the transparent elements is corresponding to each of the optical components. By each of the transparent elements corresponding to each of the optical components, the anti-reflecting layer can be adjusted according to the requirement of the optical components.
The inner side surface of one of the transparent elements can be non-planar. Therefore, the reflecting path of the light can be changed, or the transparent element can have the refractive power.
A number of the optical component can be at least two, and the optical components are corresponding to the inner side surface of the transparent element. By the single transparent element corresponding to a plurality of optical components, the transparent element is only required to be coated once for corresponding to the optical components with different working wavelengths so as to simplify the manufacturing process.
One of the optical components can be an imaging camera, and the other one of the optical components can be a light-emitting element, wherein the light-emitting element can be an infrared light-emitting element for the purpose such as the space recognition and the distance measurement. Or, the light-emitting element can be a flash element for the purpose such as the light-filling and the illumination, and the working wavelength of the flash module is between 400 nm and 700 nm corresponding to the wavelength range of the visible light.
The optical components can be at least two imaging cameras, wherein a field of view of one of the imaging cameras is different from a field of view of the other one of the imaging cameras, and a corresponding working wavelength of one of the optical components is different from a corresponding working wavelength of the other one of the optical components. In particular, the imaging cameras can be an ultra-long-focal telephoto imaging camera, a long-focal portrait imaging camera, a wide-angle imaging camera, a ultra-wide-angle imaging camera or a TOF (Time-Of-Flight) camera module, wherein a field of view of the ultra-long-focal telephoto imaging camera is between about 20 degrees and 30 degrees, a working wavelength of the ultra-long-focal telephoto imaging camera is between 400 nm and 700 nm corresponding to the wavelength range of the visible light; a field of view of the long-focal portrait imaging camera is about 50 degrees, a working wavelength of the long-focal portrait imaging camera is between 400 nm and 700 nm corresponding to the wavelength range of the visible light; a field of view of the wide-angle imaging camera is about 90 degrees, a working wavelength of the wide-angle imaging camera is between 400 nm and 700 nm corresponding to the wavelength range of the visible light; a field of view of the ultra-wide-angle imaging camera is about 130 degrees, a working wavelength of the ultra-wide-angle imaging camera is between 400 nm and 700 nm corresponding to the wavelength range of the visible light; a working wavelength of the TOF camera module is between 800 nm and 1100 nm corresponding to the wavelength range of the infrared light.
The electronic device can be a portable electronic device.
When an average reflectivity of at least one portion of the inner side surface of the transparent element corresponding to a light with a wavelength range between 400 nm and 700 nm is R₄₀₇₀, the following condition can be satisfied: R₄₀₇₀ ≤ 0.5%.
When an average reflectivity of at least one portion of the inner side surface of the transparent element corresponding to a light with a wavelength range between 750 nm and 900 nm is R₇₅₉₀, the following condition can be satisfied: R₇₅₉₀ ≤ 0.65%. In particular, the low reflectivity can be simultaneously maintained during the wavelength range of the visible light and the wavelength range of the infrared light by the anti-reflecting layer based on the graded refractive index in contrast to the anti-reflecting layer based on the interference principle of the thin film. Therefore, the reflection of the stray light can be reduced by maintaining the low reflectivity during the wavelength range of the visible light and the wavelength range of the infrared light to enhance the image quality of the imaging camera, and the infrared light component (such as the TOF camera) with the sufficient penetration of the infrared light can be provided so as to avoid influencing the function of the infrared light component.
An average structural height of the nanostructure layer can be larger than or equal to 70 nm and less than or equal to 350 nm. It should be mentioned that the average height is calculated by the structural heights of at least three or more ridge-like protrusions from the nanostructure layer, wherein the destructive measurement is to measure the vertical height from the absolute bottom (that is, the foot of the mountain) of the ridge-like protrusions to the top (that is, the top of the mountain) of the ridge-like protrusions during the observation of the structural height of the nanostructure layer from the cross section. Or, the non-destructive measurement is to measure the vertical height from the relative bottom (that is, the portion of the valley between two mountains) of the ridge-like protrusions to the top (that is, the top of the mountain) of the ridge-like protrusions during the observation of the structural height of the nanostructure layer from the outer surface.
When a spacing distance between the inner side surface and the optical component is D, the following condition can be satisfied: D ≤ 5 mm. When the spacing distance satisfied the aforementioned condition, the light is not easily reflected between the transparent element and the optical component, and the light cannot enter into the optical component again so as to avoid influencing the image quality.
Each of the aforementioned features of the electronic device can be utilized in various combinations for achieving the corresponding effects.
According to the aforementioned embodiment, specific examples are provided, and illustrated via figures.

<1st example>

Fig. 1A is a three dimensional view of an electronic device 10 according to the 1st example of the present disclosure. Fig. 1B is a partial exploded view of the electronic device 10 according to the 1st example in Fig. 1A. Fig. 1C is a partial perspective view of the electronic device 10 according to the 1st example in Fig. 1A. Fig. 1D is a schematic view of a light L traveling through the optical component 121 according to the 1st example in Fig. 1A. Fig. 1E is a schematic view of the transparent element 110 and the optical component 121 according to the 1st example in Fig. 1A. In Figs. 1A to 1E, the electronic device 10 can be a smart electronic device, and the electronic device 10 includes a transparent element 110, a plurality of optical components 121, 122, 123, 124, 125, 126 and an anti-reflecting layer 130, wherein the transparent element 110 is configured to separate an inner side and an outer side of the electronic device 10, so that the light L passes through the transparent element 110 to enter or leave the electronic device 10. It should be mentioned that the traveling path of the light L in Fig. 1D is only configured to be the schematic view rather than limiting the traveling path of the light L.
The optical components 121, 123, 124, 125, 126 are imaging cameras, respectively, and the optical component 122 is a light-emitting element, wherein a field of view of one of the imaging cameras is different from a field of view of another one of the imaging cameras. Moreover, the optical component 121 is a wide-angle imaging camera, the optical component 122 is a flash module, the optical component 123 is a long-focal portrait imaging camera, the optical component 124 is an ultra-long-focal telephoto imaging camera, the optical component 125 is a TOF camera module, and the optical component 126 is a ultra-wide-angle imaging camera, wherein the TOF camera module can include a transmitting end and a receiving end. In detail, a field of view of the optical component 121 is about 90 degrees, a working wavelength of the optical component 121 is between 400 nm and 700 nm corresponding to the wavelength range of the visible light; a working wavelength of the optical component 122 is between 400 nm and 700 nm corresponding to the wavelength range of the visible light; a field of view of the optical component 123 is about 50 degrees, a working wavelength of the optical component 123 is between 400 nm and 700 nm corresponding to the wavelength range of the visible light; a field of view of the optical component 124 is between about 20 degrees and 30 degrees, a working wavelength of the optical component 124 is between 400 nm and 700 nm corresponding to the wavelength range of the visible light; a working wavelength of the optical component 125 is between 800 nm and 1100 nm corresponding to the wavelength range of the infrared light; a field of view of the optical component 126 is about 130 degrees, a working wavelength of the optical component 126 is between 400 nm and 700 nm corresponding to the wavelength range of the visible light.
The transparent element 110 includes an inner side surface 111 (labeled in Fig. 1E) and an outer side surface 112, wherein the inner side surface 111 faces towards the inner side, and the outer side surface 112 faces towards the outer side. Furthermore, the optical components 121, 122, 123, 124, 125, 126 are corresponding to the inner side surface 111 of the transparent element 110, and the anti-reflecting layer 130 is disposed on at least one portion of the inner side surface 111 of the transparent element 110. In particular, the light L is easily reflected between the transparent element 110 and the optical components 121, 122, 123, 124, 125, 126 to influence the functional performance of the optical components 121, 122, 123, 124, 125, 126. Therefore, the reflection of the stray light between the transparent element 110 and the optical components 121, 122, 123, 124, 125, 126 can be avoided by disposing the anti-reflecting layer 130 on the inner side surface 111 of the transparent element 110 so as to enhance the image quality. By the single transparent element 110 corresponding to the optical components 121, 122, 123, 124, 125, 126, the transparent element 110 is only required to be coated once for corresponding to the optical components 121, 122, 123, 124, 125, 126 with different working wavelengths so as to simplify the manufacturing process. Moreover, the anti-reflecting layer 130 can be further disposed on the optical components 121, 122, 123, 124, 125, 126, wherein the anti-reflecting layer 130 can be disposed on the optical components such as a lens barrel and a lens element, so that the reflection of the light between the elements inside the electronic device 10 can be further reduced for enhancing the image quality.
In Fig. 1E, taking the optical component 121 as the example, a spacing distance between the inner side surface 111 and the optical component 121 is D, and the spacing distance D is 1.7 mm.
Fig. 1F is a partial enlarged view of the transparent element 110 according to the 1st example in Fig. 1E. Fig. 1G is a partial enlarged view of the inner side surface 111 of the transparent element 110 according to the 1st example in Fig. 1F. Fig. 1H is an enlarged view of the light blocking structure 113 and the anti-reflecting layer 130 according to the 1st example in Fig. 1G. Fig. 1I is an enlarged view of the transparent element 110 and the anti-reflecting layer 130 according to the 1st example in Fig. 1G. Fig. 1J is a scanning electron microscope image of the transparent element 110 and the anti-reflecting layer 130 according to the 1st example in Fig. 1I. Fig. 1K is a scanning electron microscope image of the nanostructure layer 131 according to the 1st example in Fig. 1I. Fig. 1L is a partial enlarged view of the outer side surface 112 of the transparent element 110 according to the 1st example in Fig. 1F. Fig. 1M is a schematic view of the transparent element 110 according to the 1st example in Fig. 1A. Fig. 1N is a partial scanning electron microscope image of the transparent element 110 according to the 1st example in Fig. 1M. In Figs. 1F to 1N, the anti-reflecting layer 130 can include a nanostructure layer 131 and a structure connection film 132, the outer side surface 112 can include an anti-scratch layer 140, and the transparent element 110 can further include a light blocking structure 113, wherein the light blocking structure 113 is configured to avoid the light L passing through, a light-transmitting area 150 is remained on the transparent element 110 via the light blocking structure 113, and the light-transmitting area 150 is corresponding to the optical components 121, 122, 123, 124, 125, 126, so that the light L can pass through the transparent element 110 to enter or leave the electronic device 10. Moreover, the portion except the light-transmitting area 150 can be blocked by disposing the light blocking structure 113 on the transparent element 110 so as to reduce the stray light.
In Figs. 1H to 1K, the nanostructure layer 131 can include a plurality of ridge-like protrusions (their reference numerals are omitted), wherein the ridge-like protrusions extend non-directionally from a disposing surface (its reference numeral is omitted), a bottom of each of the ridge-like protrusions is closer to the disposing surface than a top of each of the ridge-like protrusions to the disposing surface, and each of the ridge-like protrusions is tapered from the bottom towards the top. Moreover, the nanostructure layer 131 can include an aluminum oxide. Further, when the cross section of the transparent element 110 is observed, the nano-ridged protrusions have the shape of wide bottom and narrow top like a mountain ridge so as to gradually decrease the equivalent refractive index of the nanostructure layer 131 from the absolute bottom (that is, the foot of the mountain) to the top (that is, the top of the mountain) for avoiding the light L reflecting totally on the interface, and the rough surface can be formed so as to reduce the reflection of the light L.
In Fig. 1J, the destructive measurement is to measure the vertical height from the absolute bottom of the ridge-like protrusions to the top of the ridge-like protrusions during the observation of the structural height of the nanostructure layer 131 from the cross section, wherein the vertical height H1 of the nanostructure layer 131 is 248.7 nm, the vertical height H1' of the nanostructure layer 131 is 247.4 nm, and the vertical height H1" of the nanostructure layer 131 is 203 nm. By the average of the sum of the vertical heights H1, H1', H1", the average structural height of the nanostructure layer 131 is 233 nm. Further, the vertical height H3 of the structure connection film 132 is 75.15 nm.
In Fig. 1K, the non-destructive measurement is to measure the vertical height from the relative bottom (that is, the portion of the valley between two mountains) of the ridge-like protrusions to the top (that is, the top of the mountain) of the ridge-like protrusions during the observation of the structural height of the nanostructure layer 131 from the outer surface, wherein the vertical height H2 of the nanostructure layer 131 is 143.6 nm, the vertical height H2' of the nanostructure layer 131 is 143.1 nm, the vertical height H2" of the nanostructure layer 131 is 131.5 nm. By the average of the sum of the vertical heights H2, H2', H2", the average structural height of the nanostructure layer 131 is 139.4 nm.
Moreover, the structure connection film 132 includes at least one silicon dioxide layer (its reference numeral is omitted), wherein a top of the silicon dioxide layer is directly contacted with a bottom of the nanostructure layer 131, and a partial area of the top of the silicon dioxide layer is contacted with an air. Therefore, the connecting stability of the nanostructure layer 131 can be enhanced, so that the nanostructure layer 131 can be stably attached on different materials. Further, the nanostructure layer 131 has a plurality of tiny pores so as to modulate the equivalent refractive index of the nanostructure layer 131.
In Fig. 1L, the anti-scratch layer 140 can be further disposed on the anti-reflecting layer 130, and a number of the anti-reflecting layer 130 disposed on the outer side surface 112 is a plurality. Therefore, the scratch can be avoided forming on the outer side surface 112 of the transparent element 110 via the anti-scratch layer 140 so as to avoid influencing the operation of the optical components 121, 122, 123, 124, 125, 126. It should be mentioned that the layer number and the thickness of the anti-reflecting layer 130 are only configured to be the schematic view, so that the layer number and the thickness thereof can be adjusted according to the actual condition, but the present disclosure is not limited thereto.

Fig. 1O is a measurement result of the reflectivity according to the 1st example in Fig. 1A. Table 1 lists the result of the reflectivity according to the 1st example. Table 2 lists an average reflectivity R₇₅₉₀ and an average reflectivity R₄₀₇₀ according to the 1st example. It should be mentioned that the average reflectivity of at least one portion of the inner side surface 111 of the transparent element 110 corresponding to a light with a wavelength range between 750 nm and 900 nm is R₇₅₉₀, the average reflectivity of at least one portion of the inner side surface 111 of the transparent element 110 corresponding to a light with a wavelength range between 400 nm and 700 nm is R₄₀₇₀, each of a first reference sheet and a second reference sheet is a plastic substrate (that is corresponding to the transparent element 110), the nanostructure layer 131 is disposed on the surface of each of the plastic substrates so as to be the reference of the reflectivity of the surface of each of the

optical components

121, 122, 123, 124, 125, 126 which the nanostructure layer 131 is disposed on.

Table 1
wavelength (nm)	the reflectivity of the first reference sheet (%)	the reflectivity of the second reference sheet (%)	wavelength (nm)	the reflectivity of the first reference sheet (%)	the reflectivity of the second reference sheet (%)
380	0.0472	0.0472	716	0.0322	0.0335
381	0.0585	0.1074	717	0.0319	0.0346
382	0.0998	0.0998	718	0.0316	0.0343
383	0.1204	0.1204	719	0.0334	0.0341
384	0.0918	0.0918	720	0.0325	0.0338
385	0.0403	0.0357	721	0.0336	0.0325
386	0.052	0.0141	722	0.0325	0.0332
387	0.0708	0.0577	723	0.0335	0.0349
388	0.0663	0.0957	724	0.0327	0.0366
389	0.0938	0.0983	725	0.0354	0.0368
390	0.0995	0.117	726	0.036	0.0374
391	0.0931	0.0931	727	0.0368	0.0373
392	0.079	0.055	728	0.0356	0.0344
393	0.0716	0.0296	729	0.0367	0.0369
394	0.0584	0.0584	730	0.0356	0.0375
395	0.084	0.0995	731	0.0365	0.0392
396	0.1073	0.0882	732	0.0382	0.0398
397	0.0665	0.0832	733	0.0386	0.0384
398	0.071	0.0619	734	0.0392	0.0388
399	0.058	0.0387	735	0.0393	0.0398
400	0.0559	0.0373	736	0.0376	0.0388
401	0.0716	0.0716	737	0.0387	0.0413
402	0.0693	0.0693	738	0.0391	0.0405
403	0.0791	0.0791	739	0.0409	0.0423
404	0.0806	0.0646	740	0.0438	0.0429
405	0.0626	0.0587	741	0.0429	0.043
406	0.0529	0.0377	742	0.0417	0.0427
407	0.0329	0.0294	743	0.0418	0.0425
408	0.0428	0.0428	744	0.043	0.0444
409	0.0586	0.0586	745	0.0434	0.0448
410	0.0591	0.0662	746	0.0477	0.047
411	0.0616	0.0439	747	0.0471	0.0457
412	0.049	0.0366	748	0.0455	0.0455
413	0.0362	0.0241	749	0.0466	0.0466
414	0.0285	0.0234	750	0.0467	0.0471
415	0.041	0.041	751	0.0476	0.0483
416	0.0338	0.0448	752	0.0494	0.0504
417	0.0459	0.053	753	0.05	0.0514
418	0.0515	0.0394	754	0.0504	0.0489
419	0.0417	0.0301	755	0.0504	0.049
420	0.039	0.0293	756	0.0499	0.0494
421	0.0347	0.0251	757	0.0505	0.0531
422	0.0336	0.0358	758	0.0511	0.0525
423	0.0442	0.0454	759	0.0542	0.0556
424	0.0444	0.0433	760	0.0561	0.0557
425	0.0435	0.0315	761	0.0554	0.0553
426	0.0317	0.0201	762	0.0564	0.0564
427	0.0252	0.0168	763	0.0545	0.0545
428	0.0179	0.0192	764	0.0564	0.0564
429	0.0279	0.0327	765	0.057	0.0582
430	0.0377	0.0377	766	0.06	0.06
431	0.0326	0.0252	767	0.0614	0.0614
432	0.0252	0.0173	768	0.0614	0.0607
433	0.0245	0.0201	769	0.0625	0.0611
434	0.021	0.0156	770	0.0601	0.0601
435	0.0159	0.0155	771	0.0597	0.0609
436	0.0231	0.0231	772	0.0637	0.0644
437	0.0266	0.023	773	0.0648	0.0653
438	0.0251	0.0229	774	0.0671	0.0671
439	0.0227	0.0081	775	0.0671	0.0669
440	0.0226	0.0135	776	0.0664	0.0649
441	0.0155	0.0111	777	0.0682	0.0667
442	0.0129	0.0096	778	0.0676	0.0685
443	0.015	0.022	779	0.0717	0.0717
444	0.0223	0.0223	780	0.0721	0.0717
445	0.0222	0.0222	781	0.0732	0.0725
446	0.0167	0.0167	782	0.0743	0.0722
447	0.0218	0.0146	783	0.0747	0.0746
448	0.0112	0.0056	784	0.0736	0.0724
449	0.007	0.0105	785	0.076	0.0755
450	0.0197	0.0269	786	0.0788	0.0773
451	0.0215	0.0286	787	0.0795	0.0793
452	0.025	0.0196	788	0.0799	0.0784
453	0.0176	0.0141	789	0.0822	0.0808
454	0.0106	0.0036	790	0.0807	0.08
455	0.0069	0.0069	791	0.0814	0.0802
456	0.0069	0.0086	792	0.0819	0.0819
457	0.0136	0.017	793	0.0846	0.0846
458	0.0201	0.0201	794	0.0889	0.0875
459	0.0199	0.0132	795	0.0899	0.0869
460	0.0114	0.0065	796	0.0901	0.0885
461	0.0032	0.0032	797	0.089	0.0874
462	0.0096	0.0096	798	0.0893	0.0884
463	0.0063	0.0064	799	0.0915	0.0906
464	0.0138	0.0184	800	0.0931	0.0942
465	0.018	0.015	801	0.0967	0.0966
466	0.0132	0.0118	802	0.0972	0.0957
467	0.0172	0.0115	803	0.0986	0.0962
468	0.0098	0.0098	804	0.0976	0.0968
469	0.0055	0.0084	805	0.0989	0.0989
470	0.0096	0.015	806	0.0999	0.0999
471	0.0108	0.0106	807	0.1024	0.1024
472	0.0205	0.0168	808	0.1049	0.1038
473	0.0173	0.0147	809	0.1074	0.1044
474	0.0108	0.0059	810	0.1067	0.1051
475	0.0095	0.005	811	0.1073	0.1051
476	0.0092	0.0138	812	0.107	0.1056
477	0.0113	0.0134	813	0.1095	0.1082
478	0.013	0.0164	814	0.1109	0.1109
479	0.0167	0.0126	815	0.115	0.1129
480	0.0123	0.0123	816	0.1161	0.1135
481	0.0119	0.0098	817	0.117	0.1141
482	0.0116	0.0078	818	0.1164	0.1147
483	0.0116	0.0151	819	0.1159	0.1146
484	0.0183	0.0147	820	0.1192	0.1192
485	0.0198	0.0182	821	0.1221	0.1221
486	0.0209	0.0153	822	0.1253	0.1223
487	0.0136	0.01	823	0.1276	0.1243
488	0.0133	0.0077	824	0.1258	0.1235
489	0.0094	0.0098	825	0.1267	0.1242
490	0.0166	0.0147	826	0.128	0.1277
491	0.0157	0.0186	827	0.1292	0.1291
492	0.0192	0.0182	828	0.1326	0.1303
493	0.0208	0.0178	829	0.1351	0.1333
494	0.0203	0.0174	830	0.1376	0.1363
495	0.0169	0.0115	831	0.136	0.1342
496	0.0139	0.0139	832	0.1381	0.1351
497	0.0152	0.0167	833	0.1382	0.1374
498	0.0203	0.0208	834	0.1411	0.1393
499	0.0232	0.0208	835	0.1442	0.1424
500	0.0204	0.0204	836	0.1469	0.1436
501	0.0185	0.0185	837	0.1476	0.147
502	0.0171	0.0171	838	0.1494	0.1475
503	0.0169	0.0191	839	0.1494	0.1475
504	0.0187	0.0195	840	0.1483	0.1482
505	0.0223	0.0246	841	0.1558	0.1525
506	0.0266	0.025	842	0.1561	0.1542
507	0.0222	0.022	843	0.1591	0.1572
508	0.0231	0.0209	844	0.1603	0.1584
509	0.0212	0.0203	845	0.1611	0.1576
510	0.0208	0.0208	846	0.1617	0.159
511	0.0208	0.0229	847	0.1612	0.1598
512	0.0248	0.0261	848	0.168	0.1645
513	0.0245	0.0233	849	0.1665	0.1625
514	0.0249	0.023	850	0.1723	0.1683
515	0.0244	0.0227	851	0.173	0.169
516	0.0207	0.0207	852	0.172	0.168
517	0.0237	0.0237	853	0.174	0.1721
518	0.0255	0.0271	854	0.174	0.1735
519	0.0286	0.0268	855	0.1795	0.1755
520	0.0272	0.0255	856	0.1835	0.1774
521	0.0269	0.0263	857	0.1846	0.1824
522	0.0259	0.0259	858	0.1864	0.1827
523	0.0256	0.0273	859	0.1844	0.1816
524	0.0266	0.0277	860	0.1862	0.1834
525	0.0294	0.0305	861	0.1867	0.1846
526	0.0298	0.03	862	0.1932	0.1891
527	0.028	0.028	863	0.1943	0.1909
528	0.0291	0.0285	864	0.1983	0.1939
529	0.0289	0.0283	865	0.1987	0.1941
530	0.0258	0.0272	866	0.1988	0.1966
531	0.0288	0.0301	867	0.201	0.1974
532	0.0318	0.0324	868	0.2025	0.2004
533	0.0315	0.0331	869	0.2055	0.2034
534	0.0321	0.0309	870	0.2084	0.2043
535	0.029	0.029	871	0.211	0.2086
536	0.0294	0.0294	872	0.213	0.2089
537	0.0311	0.032	873	0.2134	0.2092
538	0.0327	0.0356	874	0.2137	0.2113
539	0.0317	0.0331	875	0.2147	0.2143
540	0.0346	0.0349	876	0.2205	0.2163
541	0.0334	0.0329	877	0.2221	0.2191
542	0.0323	0.0323	878	0.2265	0.2211
543	0.0319	0.0324	879	0.2274	0.2231
544	0.0318	0.0341	880	0.2273	0.222
545	0.0345	0.035	881	0.2271	0.224
546	0.035	0.0363	882	0.2298	0.2271
547	0.0338	0.0353	883	0.2346	0.2325
548	0.0351	0.0354	884	0.2392	0.2336
549	0.0334	0.0338	885	0.241	0.238
550	0.0337	0.0339	886	0.2437	0.2395
551	0.0341	0.0357	887	0.246	0.2399
552	0.0348	0.0367	888	0.2426	0.2403
553	0.0359	0.0368	889	0.2464	0.2422
554	0.0373	0.0376	890	0.2497	0.2466
555	0.0363	0.0363	891	0.2533	0.2494
556	0.0355	0.036	892	0.2566	0.2522
557	0.0337	0.0352	893	0.2572	0.2513
558	0.0351	0.0379	894	0.2567	0.2524
559	0.0357	0.0387	895	0.2594	0.2551
560	0.0374	0.039	896	0.2632	0.2589
561	0.0368	0.0383	897	0.2664	0.2621
562	0.0374	0.0378	898	0.2703	0.266
563	0.0364	0.0364	899	0.2746	0.2689
564	0.0362	0.0366	900	0.2726	0.2679
565	0.0368	0.0384	901	0.2751	0.2705
566	0.0361	0.0389	902	0.2771	0.2712
567	0.037	0.0403	903	0.2788	0.2744
568	0.0397	0.04	904	0.2834	0.279
569	0.0373	0.0389	905	0.2868	0.2824
570	0.0363	0.0367	906	0.2897	0.2853
571	0.0359	0.0374	907	0.2897	0.2842
572	0.036	0.0376	908	0.2897	0.2862
573	0.0376	0.0392	909	0.2931	0.2887
574	0.0385	0.0401	910	0.295	0.2905
575	0.0394	0.0395	911	0.2991	0.2955
576	0.0376	0.0376	912	0.3017	0.298
577	0.0363	0.0376	913	0.3082	0.3017
578	0.0364	0.0397	914	0.3057	0.3032
579	0.0379	0.0397	915	0.3071	0.3018
580	0.0366	0.0412	916	0.3087	0.3031
581	0.0392	0.0414	917	0.3138	0.3091
582	0.0393	0.0405	918	0.3163	0.3116
583	0.0393	0.0393	919	0.3206	0.316
584	0.0369	0.0385	920	0.3229	0.3182
585	0.0369	0.0385	921	0.3236	0.3188
586	0.0375	0.0393	922	0.3256	0.3208
587	0.0378	0.0408	923	0.3277	0.321
588	0.0397	0.0413	924	0.3312	0.3264
589	0.0401	0.0406	925	0.3346	0.3298
590	0.0376	0.0393	926	0.3391	0.3343
591	0.0362	0.0391	927	0.3411	0.3362
592	0.0356	0.0388	928	0.3419	0.3354
593	0.0375	0.0391	929	0.3442	0.3343
594	0.0392	0.0408	930	0.3438	0.3397
595	0.0397	0.0401	931	0.3498	0.3449
596	0.0395	0.0395	932	0.3531	0.3475
597	0.0361	0.0377	933	0.3577	0.3526
598	0.036	0.0383	934	0.3586	0.3543
599	0.0358	0.0378	935	0.3601	0.3502
600	0.0357	0.0388	936	0.3639	0.3561
601	0.0386	0.039	937	0.3629	0.3571
602	0.0392	0.0407	938	0.3693	0.3634
603	0.0377	0.0393	939	0.3709	0.3652
604	0.0366	0.0381	940	0.3741	0.3688
605	0.0349	0.0379	941	0.3763	0.371
606	0.0353	0.0377	942	0.3763	0.371
607	0.036	0.0385	943	0.3799	0.3724
608	0.037	0.0387	944	0.3834	0.378
609	0.0381	0.0396	945	0.3858	0.3783
610	0.037	0.0385	946	0.3905	0.3837
611	0.0358	0.0381	947	0.3942	0.3878
612	0.0344	0.0372	948	0.3956	0.3901
613	0.0341	0.037	949	0.3969	0.3885
614	0.0355	0.0383	950	0.4005	0.392
615	0.0361	0.0381	951	0.4022	0.3936
616	0.0369	0.0371	952	0.4055	0.3969
617	0.0341	0.0368	953	0.4089	0.4058
618	0.0347	0.036	954	0.4143	0.4085
619	0.0335	0.0348	955	0.4178	0.4103
620	0.0342	0.0366	956	0.417	0.4081
621	0.0343	0.037	957	0.4191	0.4101
622	0.0353	0.0388	958	0.4199	0.4116
623	0.0357	0.037	959	0.4253	0.4178
624	0.0352	0.0362	960	0.4296	0.4225
625	0.0334	0.0347	961	0.4352	0.4261
626	0.032	0.0346	962	0.4381	0.4266
627	0.0325	0.0351	963	0.4368	0.4292
628	0.034	0.0357	964	0.439	0.4294
629	0.0343	0.0368	965	0.4366	0.4325
630	0.035	0.0355	966	0.4462	0.4397
631	0.033	0.0349	967	0.449	0.4424
632	0.0321	0.0333	968	0.4537	0.447
633	0.0317	0.0341	969	0.4565	0.4472
634	0.0319	0.0342	970	0.4581	0.448
635	0.033	0.0348	971	0.4557	0.448
636	0.033	0.0347	972	0.4609	0.4521
637	0.0342	0.0354	973	0.466	0.4589
638	0.0316	0.0331	974	0.4713	0.4642
639	0.0306	0.0331	975	0.4757	0.4655
640	0.0298	0.0332	976	0.4764	0.4677
641	0.0305	0.0344	977	0.4799	0.4689
642	0.0322	0.0346	978	0.4768	0.4689
643	0.0334	0.0347	979	0.4812	0.4737
644	0.032	0.034	980	0.4862	0.4786
645	0.0311	0.0326	981	0.49	0.4823
646	0.0286	0.03	982	0.4903	0.4825
647	0.0291	0.0317	983	0.5008	0.489
648	0.0301	0.0327	984	0.4956	0.4867
649	0.0312	0.0339	985	0.4979	0.4895
650	0.0315	0.0329	986	0.5002	0.4903
651	0.0304	0.0317	987	0.505	0.5041
652	0.0304	0.0318	988	0.5083	0.5034
653	0.0285	0.0298	989	0.5169	0.5067
654	0.0292	0.0319	990	0.5186	0.5055
655	0.0292	0.0329	991	0.5173	0.5079
656	0.0299	0.0326	992	0.5197	0.5066
657	0.0306	0.0332	993	0.5186	0.5095
658	0.0292	0.0306	994	0.5264	0.5196
659	0.0289	0.0305	995	0.5333	0.5249
660	0.0285	0.0305	996	0.5359	0.5264
661	0.0282	0.0305	997	0.5411	0.5277
662	0.0278	0.0305	998	0.5363	0.5264
663	0.0302	0.0328	999	0.541	0.5309
664	0.0291	0.0312	1000	0.5375	0.532
665	0.0282	0.0295	1001	0.55	0.5404
666	0.0277	0.0291	1002	0.5532	0.5479
667	0.0275	0.0302	1003	0.5617	0.5497
668	0.0269	0.029	1004	0.5523	0.5452
669	0.0277	0.0307	1005	0.5607	0.5501
670	0.0289	0.0305	1006	0.5559	0.5503
671	0.0289	0.0302	1007	0.5595	0.5505
672	0.0277	0.0286	1008	0.5709	0.5637
673	0.0261	0.0269	1009	0.5713	0.5652
674	0.0262	0.0276	1010	0.5807	0.5732
675	0.0266	0.0292	1011	0.5806	0.5681
676	0.0282	0.0309	1012	0.5794	0.5623
677	0.0291	0.031	1013	0.5779	0.5644
678	0.0281	0.0294	1014	0.5769	0.5759
679	0.0278	0.0292	1015	0.5861	0.5793
680	0.0266	0.0293	1016	0.5976	0.5907
681	0.0267	0.0286	1017	0.6057	0.5927
682	0.0278	0.0291	1018	0.6021	0.5878
683	0.0268	0.0307	1019	0.598	0.5856
684	0.0294	0.0308	1020	0.5969	0.5894
685	0.0274	0.0294	1021	0.6017	0.5941
686	0.0265	0.0281	1022	0.604	0.604
687	0.0255	0.0281	1023	0.6226	0.6127
688	0.0261	0.0285	1024	0.6276	0.6112
689	0.0282	0.0302	1025	0.6242	0.6075
690	0.0282	0.0299	1026	0.6129	0.6036
691	0.0282	0.0308	1027	0.6228	0.6065
692	0.0279	0.0292	1028	0.6181	0.6125
693	0.0274	0.0293	1029	0.6222	0.6222
694	0.0272	0.0289	1030	0.632	0.632
695	0.0267	0.0293	1031	0.6519	0.6327
696	0.0291	0.0307	1032	0.6475	0.6277
697	0.0285	0.0306	1033	0.6383	0.618
698	0.0292	0.0314	1034	0.6366	0.6238
699	0.0292	0.0306	1035	0.6309	0.6308
700	0.0289	0.0289	1036	0.6549	0.65
701	0.0278	0.0283	1037	0.6658	0.6485
702	0.0269	0.0291	1038	0.668	0.6487
703	0.0276	0.0314	1039	0.6616	0.6489
704	0.0304	0.0317	1040	0.651	0.6389
705	0.0304	0.0317	1041	0.6544	0.6467
706	0.0296	0.031	1042	0.6563	0.6485
707	0.0302	0.0304	1043	0.6583	0.6562
708	0.029	0.0304	1044	0.6848	0.6839
709	0.0286	0.0313	1045	0.6876	0.6738
710	0.0305	0.0331	1046	0.693	0.6789
711	0.0305	0.0332	1047	0.6784	0.6527
712	0.0293	0.0306	1048	0.6629	0.6477
713	0.031	0.0324	1049	0.6661	0.6781
714	0.032	0.0327	1050	0.6954	0.6882
715	0.0301	0.0321

Table 2
	the average reflectivity of the first reference sheet (%)	the average reflectivity of the second reference sheet (%)
R7590	0.14	0.14
R4070	0.03	0.03

It should be mentioned that the dot pattern and the inclined-striped pattern in Figs. 1A, 1B, 1F to 1I and 1M are configured to indicate the range of the anti-reflecting layer 130 and the range of the light blocking structure 113, respectively, the thickness of the anti-reflecting layer 130, the thickness of anti-scratch layer 140 and the thickness of the light blocking structure 113 are only configured to be the schematic view, and the thicknesses thereof are not shown according to the actual ratio.

<2nd example>

Fig. 2A is a partial exploded view of an electronic device 20 according to the 2nd example of the present disclosure. In Fig. 2A, the electronic device 20 can be a smart electronic device, and the electronic device 20 includes a plurality of transparent elements 210, a plurality of optical components 221, 222, 223, 224, 225, 226 and an anti-reflecting layer 230, wherein the transparent elements 210 are configured to separate an inner side and an outer side of the electronic device 20, so that the light (not shown) passes through the transparent elements 210 to enter or leave the electronic device 20.
In detail, each of the transparent elements 210 is corresponding to each of the optical components 221, 222, 223, 224, 225, 226. Therefore, the anti-reflecting layer 230 can be adjusted according to the requirement of the optical component 221.
Fig. 2B is a schematic view of the transparent element 210 and the optical component 221 according to the 2nd example in Fig. 2A. In Fig. 2B, each of the transparent elements 210 includes an inner side surface 211 and an outer side surface 212, wherein the inner side surface 211 faces towards the inner side, and the outer side surface 212 faces towards the outer side. Moreover, the inner side surface 211 of each of the transparent elements 210 is non-planar. Therefore, the reflecting path of the light can be changed so as to avoid influencing the operation of the optical component 221 by the reflecting light. Or, the transparent elements 210 can have the refractive power.
It should be mentioned that the dot pattern in Fig. 2A is configured to indicate the range of the anti-reflecting layer 230, the optical system and the structural dispositions according to the 2nd example are the same as the optical system and the structural dispositions according to the 1st example, and hence will not be described again herein.

<3rd example>

Fig. 3A is a three dimensional view of an electronic device 30 according to the 3rd example of the present disclosure. Fig. 3B is a partial exploded view of the electronic device 30 according to the 3rd example in Fig. 3A. In Figs. 3A and 3B, the electronic device 30 can be a smart electronic device, and the electronic device 30 includes a transparent element 310, an optical component 320 and an anti-reflecting layer 330.
According to the 3rd example, the optical component 320 is a telescopic imaging camera. When the optical component 320 is idled, the optical component 320 is disposed inside the electronic device 30; when the optical component 320 is started, the optical component 320 is lifted from inside of the electronic device 30 so as to keep the consistency of a display area 31 of the electronic device 30 to enhance the displaying effect. Further, when the optical component 320 is lifted, the transparent element 310 is configured to separate an inner side and an outer side of the electronic device 30, so that the light (not shown) passes through the transparent element 310 to enter or leave the electronic device 30.
The transparent element 310 includes an inner side surface 311 (labeled in Fig. 3D) and an outer side surface 312, wherein the inner side surface 311 faces towards the inner side, and the outer side surface 312 faces towards the outer side. Moreover, the optical component 320 is corresponding to the inner side surface 311 of the transparent element 310, and the anti-reflecting layer 330 is disposed on at least one portion of the inner side surface 311 of the transparent element 310.
Fig. 3C is a schematic view of the transparent element 310 according to the 3rd example in Fig. 3A. In Figs. 3B and 3C, the transparent element 310 can further include a light blocking structure 313, wherein the light blocking structure 313 is configured to avoid the light passing through, a light-transmitting area 350 is remained on the transparent element 310 via the light blocking structure 313, and the light-transmitting area 350 is corresponding to the optical component 320, so that the light can pass through the transparent element 310 to enter or leave the electronic device 30. Moreover, the portion except the light-transmitting area 350 can be blocked by disposing the light blocking structure 313 on the transparent element 310 so as to reduce the stray light.
Fig. 3D is a cross-sectional view of the transparent element 310 along a 3D-3D line in Fig. 3C. Fig. 3E is a partial enlarged view of the transparent element 310 according to the 3rd example in Fig. 3D. In Figs. 3D and 3E, a number of the anti-reflecting layer 330 is a plurality, wherein the anti-reflecting layer 330 can include a plurality of high refractive index films and a plurality of low refractive index films, which are alternately stacked, so that the anti-reflecting effect can be achieved based on the interference principle of the thin film.
It should be mentioned that the dot pattern and the inclined-striped pattern in Figs. 3A to 3C are configured to indicate the range of the anti-reflecting layer 330 and the range of the light blocking structure 313, respectively.

<4th example>

Fig. 4 is a three dimensional view of an electronic device 40 according to the 4th example of the present disclosure. In Fig. 4, the electronic device 40 can be an AR (Augmented Reality) head-mounted device, and the electronic device 40 includes a transparent element (its reference numeral is omitted), an optical component (its reference numeral is omitted) and an anti-reflecting layer 430, wherein the transparent element is configured to separate an inner side and an outer side of the electronic device 40, so that the light (not shown) passes through the transparent element to enter or leave the electronic device 40.
Moreover, the transparent element includes an inner side surface (its reference numeral is omitted) and an outer side surface (its reference numeral is omitted), wherein the inner side surface faces towards the inner side, the outer side surface faces towards the outer side, the optical component is corresponding to the inner side surface of the transparent element, and the anti-reflecting layer 430 is disposed on at least one portion of the inner side surface of the transparent element.
Further, the disposition and the structural details of the transparent element, the optical component and the anti-reflecting layer according to the 4th example can be referred to the disposition and the structural details of the transparent element, the optical component and the anti-reflecting layer according to any one of the 1st example to the 3rd example, and hence will not be described again herein.

<5th example>

Fig. 5 is a three dimensional view of an electronic device 50 according to the 5th example of the present disclosure. In Fig. 5, the electronic device 50 can be an VR (Virtual Reality) head-mounted device, and the electronic device 50 includes a transparent element (its reference numeral is omitted), a plurality of optical components (their reference numerals are omitted) and an anti-reflecting layer 530, wherein the transparent element is configured to separate an inner side and an outer side of the electronic device 50, so that the light (not shown) passes through the transparent element to enter or leave the electronic device 50.
Moreover, the transparent element includes an inner side surface (its reference numeral is omitted) and an outer side surface (its reference numeral is omitted), wherein the inner side surface faces towards the inner side, the outer side surface faces towards the outer side, the optical components are corresponding to the inner side surface of the transparent element, and the anti-reflecting layer 530 is disposed on at least one portion of the inner side surface of the transparent element.
Further, the disposition and the structural details of the transparent element, the optical components and the anti-reflecting layer according to the 5th example can be referred to the disposition and the structural details of the transparent element, the optical components and the anti-reflecting layer according to any one of the 1st example to the 3rd example, and hence will not be described again herein.

<6th example>

Fig. 6 is a three dimensional view of an electronic device 60 according to the 6th example of the present disclosure. In Fig. 6, the electronic device 60 can be a video capturing device, and the electronic device 60 includes a transparent element (its reference numeral is omitted), an optical component (its reference numeral is omitted) and an anti-reflecting layer 630, wherein the transparent element is configured to separate an inner side and an outer side of the electronic device 60, so that the light (not shown) passes through the transparent element to enter or leave the electronic device 60.
Moreover, the transparent element includes an inner side surface (its reference numeral is omitted) and an outer side surface (its reference numeral is omitted), wherein the inner side surface faces towards the inner side, the outer side surface faces towards the outer side, the optical component is corresponding to the inner side surface of the transparent element, and the anti-reflecting layer 630 is disposed on at least one portion of the inner side surface of the transparent element.
Furthermore, the electronic device 60 can further include a fill light module 61 and a focusing assisting module 62, and the electronic device 60 can be disposed on a computer monitor (its reference numeral is omitted).
Further, the disposition and the structural details of the transparent element, the optical component and the anti-reflecting layer according to the 6th example can be referred to the disposition and the structural details of the transparent element, the optical component and the anti-reflecting layer according to any one of the 1st example to the 3rd example, and hence will not be described again herein.

Claims

An electronic device (10), characterized in comprising:
a transparent element (110) configured to separate an inner side and an outer side of the electronic device (10), so that a light (L) passing through the transparent element (110) to enter or leave the electronic device (10), and the transparent element (110) comprising:
an inner side surface (111); and

an outer side surface (112), wherein the inner side surface (111) faces towards the inner side, and the outer side surface (112) faces towards the outer side;

an optical component (121) corresponding to the inner side surface (111) of the transparent element (110); and

an anti-reflecting layer (130) disposed on at least one portion of the inner side surface (111) of the transparent element (110).
The electronic device (10) of claim 1, wherein the anti-reflecting layer (130) comprises a nanostructure layer (131), the nanostructure layer (131) comprises a plurality of ridge-like protrusions, the ridge-like protrusions extend non-directionally from a disposing surface, a bottom of each of the ridge-like protrusions is closer to the disposing surface than a top of each of the ridge-like protrusions to the disposing surface, and each of the ridge-like protrusions is tapered from the bottom towards the top.
The electronic device (10) of any of claims 1-2, wherein the anti-reflecting layer (130) further comprises a structure connection film (132), the structure connection film (132) comprises at least one silicon dioxide layer, and a top of the at least one silicon dioxide layer is directly contacted with a bottom of the nanostructure layer (131).
The electronic device (10) of any of claims 1-3, wherein a partial area of the top of the at least one silicon dioxide layer is contacted with an air.
The electronic device (10) of any of claims 1-4, wherein an average reflectivity of the at least one portion of the inner side surface (111) of the transparent element (110) corresponding to a light with a wavelength range between 400 nm and 700 nm is R₄₀₇₀, and the following condition is satisfied: $R_{4070} \leq 0.5 % .$
The electronic device (10) of any of claims 1-5, wherein an average reflectivity of the at least one portion of the inner side surface (111) of the transparent element (110) corresponding to a light with a wavelength range between 750 nm and 900 nm is R₇₅₉₀, and the following condition is satisfied: $R_{7590} \leq 0.65 % .$
The electronic device (10) of any of claims 1-6, wherein an average structural height of the nanostructure layer (131) is larger than or equal to 70 nm and less than or equal to 350 nm.
The electronic device (10) of any of claims 1-7, wherein the outer side surface (112) comprises an anti-scratch layer (140).
The electronic device (10) of any of claims 1-8, wherein the optical component (121) is an imaging camera.
The electronic device (10) of any of claims 1-9, wherein a spacing distance between the inner side surface (111) and the optical component (121) is D, and the following condition is satisfied: $D \leq 5 mm .$
The electronic device (10) of any of claims 1-10, wherein the anti-reflecting layer (130) is further disposed on the optical component (121).
The electronic device (10) of any of claims 1-11, wherein the transparent element (110) further comprises a light blocking structure (113).
The electronic device (10) of any of claims 1-12, wherein a light-transmitting area (150) is remained on the transparent element (110) via the light blocking structure (113), and the light-transmitting area (150) is corresponding to the optical component (121).
The electronic device (20) of any of claims 1-13, wherein a number of the transparent element (210) is at least two, a number of the optical component (221, 222, 223, 224, 225, 226) is at least two, and each of the transparent elements (210) is corresponding to each of the optical components (221, 222, 223, 224, 225, 226).
The electronic device (20) of any of claims 1-14, wherein the inner side surface (211) of one of the at least two transparent elements (210) is non-planar.
The electronic device (10) of any of claims 1-15, wherein a number of the optical component (121, 122, 123, 124, 125, 126) is at least two, and the at least two optical components (121, 122, 123, 124, 125, 126) are corresponding to the inner side surface (111) of the transparent element (110).
The electronic device (10) of any of claims 1-16, wherein one of the at least two optical components (121, 122, 123, 124, 125, 126) is an imaging camera, and the other one of the at least two optical components (121, 122, 123, 124, 125, 126) is a light-emitting element.
The electronic device (10) of any of claims 1-17, wherein the at least two optical components (121, 122, 123, 124, 125, 126) are at least two imaging cameras, and a field of view of one of the at least two imaging cameras is different from a field of view of the other one of the at least two imaging cameras.
The electronic device (10) of any of claims 1-18, wherein a corresponding working wavelength of one of the at least two optical components (121, 122, 123, 124, 125, 126) is different from a corresponding working wavelength of the other one of the at least two optical components (121, 122, 123, 124, 125, 126).
The electronic device (10) of any of claims 1-19, wherein the electronic device (10) is a portable electronic device.